Incoming & Outgoing mail server: You can obtain this information from your Webmail interface and then going to Settings > Forwarding and POP/IMAP settings. To access your Webmail interface, you can use the URL of the form http://webmail.yourdomainname.com. Here, you would need to login with your email address and the corresponding password

Usually, the port used for the Outgoing Mail Server/SMTP Service is 25. However, there might be a situation where your ISP might be blocking the use of port 25 for SMTP service. Many ISPs block port 25 in order to minimize the amount of spam sent using their network. If you are facing issues sending mails using the default port 25, you can confirm with your ISP whether port 25 is indeed blocked by them.

To circumvent this, you can use an alternate port 587 for sending mails if port 25 is blocked. Here's how:

a) In Microsoft Outlook 2003, on the Tools menu, click E-mail Accounts. b) Select View or change existing email accounts and click Next. c) Select the email account you wish to modify and click Change d) In the Internet E-mail Settings section, click More Settings e) Under the Advanced tab, replace the default port number 25 with the alternate port number 587 in the field provided for Outgoing server (SMTP) f) Click OK, Next and then Finish to save the changes.

That's it, your account has been setup! Just click the Send/Receive button and all your emails will be downloaded by Outlook 2003.